CN115167539A - Device for controlling the level of a liquid in a container and object production system - Google Patents
Device for controlling the level of a liquid in a container and object production system Download PDFInfo
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- CN115167539A CN115167539A CN202210568726.XA CN202210568726A CN115167539A CN 115167539 A CN115167539 A CN 115167539A CN 202210568726 A CN202210568726 A CN 202210568726A CN 115167539 A CN115167539 A CN 115167539A
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- 239000007788 liquid Substances 0.000 title claims abstract description 389
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 72
- 238000012544 monitoring process Methods 0.000 claims abstract description 65
- 230000004913 activation Effects 0.000 claims abstract description 25
- 230000003213 activating effect Effects 0.000 claims abstract description 9
- 230000006698 induction Effects 0.000 claims description 29
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 22
- 230000009471 action Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 40
- 239000011521 glass Substances 0.000 description 27
- 229910052697 platinum Inorganic materials 0.000 description 20
- 239000000523 sample Substances 0.000 description 20
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 239000006060 molten glass Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to the technical field of liquid level automatic control, and discloses a device for controlling the height of the liquid level of liquid in a container and an object production system, wherein the device comprises: the liquid level monitoring module is used for sending an activation instruction to the moving module under the condition of contacting the liquid level; the moving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition that the activating instruction is received; the liquid level height determining module is used for determining the height of the liquid level; the mobile module is further configured to: obtaining a liquid level separation height from the liquid level height determination module; comparing the liquid level separation height with a preset liquid level height range; and under the condition that the liquid level separation height is not within the preset liquid level height range, controlling to move the liquid level so that the liquid level separation height is within the preset liquid level height range. Therefore, the liquid level can be monitored in real time and automatically controlled.
Description
Technical Field
The invention relates to the technical field of automatic liquid level control, in particular to a device for controlling the height of the liquid level of liquid in a container and an object production system.
Background
In glass production, the melting furnace is generally provided with an overflow port for discharging molten glass having an unsatisfactory surface because the molten glass has different glass compositions at and below the liquid surface due to volatilization of elements at the molten glass surface. In addition, the glass liquid level rises during feeding, and when the liquid level exceeds the overflow height, qualified glass liquid can be discharged, so that waste is caused. In addition, if the liquid level fluctuates, on one hand, the corrosion of the tank wall is accelerated, stones are generated, and bubble defects are easily formed; on the other hand, the stability of the forming operation is affected, and the quality and the yield of the product are affected. Therefore, controlling the height of the glass level in the furnace has a critical impact on production.
In the prior art, some large-scale glass factories adopt gas laser type glass liquid level control devices, although the control performance is good, the structure is complex, the reliability is low, and the price is high. In addition, there are other methods for detecting the glass liquid level, but the glass liquid level cannot be monitored in real time, and the glass liquid level cannot be automatically controlled.
Disclosure of Invention
It is an object of embodiments of the present invention to provide an apparatus for controlling the level of a liquid in a container and an object producing system, which solve, or at least partially solve, the above problems.
In order to achieve the above object, an aspect of an embodiment of the present invention provides an apparatus for controlling a level of a liquid in a container, the apparatus including: the liquid level monitoring module is used for sending an activation instruction to the moving module under the condition of contacting the liquid level; the moving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition that the activating instruction is received; the liquid level height determining module is used for determining the height of the liquid level; the mobile module is further configured to: obtaining a liquid level separation height from the liquid level height determination module, wherein the liquid level separation height is the height of the liquid level just when the liquid level monitoring module is separated from the liquid level; comparing the liquid level separation height with a preset liquid level height range; and under the condition that the liquid level separation height is not within the preset liquid level height range, controlling to move the liquid level so that the liquid level separation height is within the preset liquid level height range.
Optionally, the moving module controlling to move the liquid level such that the liquid level separation height is within the preset liquid level height range if the liquid level separation height is not within the preset liquid level height range comprises: controlling to increase the material generating the liquid to lift the liquid level when the liquid level separation height does not reach a lower limit of the preset liquid level height range, wherein a speed of increasing the material is adjusted based on a difference between the liquid level separation height and the lower limit; and/or controlling the release of the liquid from the container to lower the liquid level when the liquid level separation height exceeds the upper limit of the preset liquid level range.
Optionally, the liquid level monitoring module generates an induced magnetic field due to contact with the liquid level and issues an activation instruction to the moving module based on the generated induced magnetic field.
Optionally, the liquid level monitoring module comprises: the induction magnetic field generating module is used for generating an induction magnetic field under the condition of contacting the liquid level; the induction current generation module is used for generating induction current under the action of the generated induction magnetic field; and an activation instruction issuing module for issuing the activation instruction to the moving module under the action of the generated induced current.
Optionally, the induced magnetic field generating module includes: a liquid level contact module; a connection member for connecting the liquid level contact module and the first coil, the connection member including a first portion and a second portion, the first portion being parallel to the liquid level, the first portion being connected to the first coil, the second portion being connected to the liquid level contact module, the liquid level height determination module determining the height of the liquid level based on the first portion, the movement module moving the liquid level monitoring module by moving the first portion; and the first coil is used for generating an induction magnetic field by receiving the current transmitted from the liquid surface contact module through the connecting component under the condition that the liquid surface contact module is contacted with the liquid surface.
Optionally, the liquid level determination module comprises: a height detection module for detecting a height of the first portion; and a height processing module for determining a height of the liquid level based on the height of the first portion.
Optionally, the height processing module is further configured to: when the liquid level separation height does not reach the lower limit of the preset liquid level height range and needs to increase the material for generating the liquid, the speed for increasing the material is determined based on the difference between the liquid level separation height and the lower limit.
Optionally, the induced current generating module is a second coil; and/or the activation instruction sending module is a Hall sensor.
Optionally, the moving module comprises: a control module to: receiving the activation instruction; and sending a driving instruction to a driving module under the condition of receiving the activating instruction; the driving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition of receiving the driving instruction; the control module is further configured to: acquiring the liquid level separation height; comparing the liquid level separation height with a preset liquid level height range; and under the condition that the liquid level separation height is not within the preset liquid level height range, controlling to move the liquid level so that the liquid level separation height is within the preset liquid level height range.
Optionally, the driving module comprises: the motor is used for receiving the driving instruction; and the liquid level separation module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the driving of the motor.
Optionally, the liquid level separation module comprises: the hydraulic rod is driven by the motor to move; hydraulic oil; the lifting rod is used for moving the liquid level monitoring module under the action that the hydraulic rod extrudes the hydraulic oil; the hydraulic cylinder is positioned in the hydraulic cylinder, and the hydraulic oil is positioned between the hydraulic rod and the lifting rod; the first sealing gasket is positioned between the hydraulic rod and the hydraulic oil; and a second gasket positioned between the lift rod and the hydraulic oil.
Further, another aspect of an embodiment of the present invention provides an object production system including: the above apparatus, wherein the object is present in a liquid state during the production of the object.
Through the technical scheme, when the liquid level monitoring module is contacted with the liquid level, the mobile module is started to move the liquid level monitoring module, so that the mobile monitoring module is separated from the liquid level, and the mobile module compares the liquid level separation height with the preset liquid level height range to control the liquid level separation height within the preset range; and when the liquid level separation height is not in the preset liquid level height range, the mobile liquid level is controlled to enable the liquid level separation height to be always in the preset liquid level height range, so that the automatic control of the liquid level is realized. In addition, the liquid level can be controlled only by the liquid level monitoring module, the moving module and the liquid level height determining module, and the device is simple in structure and low in cost; moreover, the liquid level can be controlled relatively accurately, and the reliability is high.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a block diagram of an apparatus for controlling the level of a liquid in a container according to an embodiment of the present invention;
FIG. 2 is a block diagram of an apparatus for controlling the level of a liquid in a container according to another embodiment of the present invention;
FIG. 3 is a circuit diagram of an apparatus for controlling the level of a liquid in a container according to another embodiment of the present invention; and
fig. 4 is a logic diagram of an apparatus for controlling the level of a liquid in a container according to another embodiment of the present invention.
Description of the reference numerals
1. Lifting rod for first coil 2
3. Platinum probe 4 molten glass
5. Glass melting furnace 6 height measuring instrument
7. 8U-shaped hydraulic cylinder of high-temperature motor
9. First sealing gasket of hydraulic rod 10
11. Hydraulic oil 12 liquid level monitoring module
13. Liquid level determination module for mobile module 14
15. First portion of second gasket 16
17. Second part 18 second coil
19. Hall sensor 20 light emitting diode
21. Controller for controlling a motor
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
One aspect of an embodiment of the present invention provides an apparatus for controlling the level of a liquid in a container.
Fig. 1 is a block diagram of an apparatus for controlling a level of a liquid in a container according to an embodiment of the present invention. As shown in fig. 1, the apparatus includes a liquid level monitoring module 12, a movement module 13, and a liquid level determination module 14. Wherein, the liquid level monitoring module is used for sending an activating instruction to the moving module 13 under the condition of contacting the liquid level. Alternatively, the activation command may be issued based on an induced magnetic field. Specifically, the liquid level monitoring module 12 generates an induction magnetic field due to contact with the liquid level and issues an activation instruction to the movement module based on the generated induction magnetic field. For example, the liquid may be a liquid having an electrical conductivity, such as a molten glass liquid, and when the level monitoring module 12 comes into contact with the liquid, an electrical current is transmitted to the level monitoring module 12, the level monitoring module 12 generates an induced magnetic field and issues an activation command to the movement module 13 based on the generated induced magnetic field. The moving module 13 is configured to move the liquid level monitoring module 12 until the liquid level monitoring module 12 is separated from the liquid level upon receiving the activating instruction. There are many ways for the moving module 13 to move the liquid level monitoring module 12 away from the liquid level. For example, the force is applied to the level monitoring module 12 by means of mechanical conduction force, such that the level monitoring module 12 is separated from the liquid level; alternatively, the force may be applied to the level monitoring module 12 by hydraulically acting conductive forces such that the level monitoring module 12 is separated from the liquid level. The liquid level determination module 14 is used to determine the height of the liquid level. Wherein, the liquid level height determining module 14 can directly detect the height of the liquid level; the liquid level determining module 14 may also indirectly detect the liquid level by other means, for example, by the liquid level monitoring module 12. Alternatively, the liquid level determining module 14 may be any device capable of measuring the height of the liquid level, which satisfies the principles of the technical solutions provided by the embodiments of the present invention. Furthermore, the moving module 13 is further configured to: obtaining a liquid level separation height from the liquid level height determination module 14, wherein the liquid level separation height is the height of the liquid level when the liquid level monitoring module 12 is just separated from the liquid level; comparing the liquid level separation height with a preset liquid level height range; and controlling the moving liquid level so that the liquid level separation height is within the preset liquid level height range in a case where the liquid level separation height is not within the preset liquid level height range. The preset liquid level height range can be determined according to specific conditions.
Through the technical scheme, when the liquid level monitoring module is contacted with the liquid level, the mobile module is started to move the liquid level monitoring module, so that the mobile monitoring module is separated from the liquid level, and the mobile module compares the liquid level separation height with the preset liquid level height range to control the liquid level separation height within the preset range; and when the liquid level separation height is not in the preset liquid level height range, the mobile liquid level is controlled to enable the liquid level separation height to be always in the preset liquid level height range, so that the automatic control of the liquid level is realized. In addition, the liquid level can be controlled only by the liquid level monitoring module, the moving module and the liquid level height determining module, and the device is simple in structure and low in cost; moreover, the liquid level can be controlled relatively accurately, and the reliability is high.
Optionally, in an embodiment of the present invention, the moving module may control the moving liquid level such that the liquid level separation height is within the preset liquid level height range in case the liquid level separation height is not within the preset liquid level height range. When the liquid level separation height does not reach the lower limit of the preset liquid level height range, the liquid generating materials are controlled to be increased to lift the liquid level, wherein the speed of increasing the materials is adjusted based on the difference between the liquid level separation height and the lower limit. Specifically, when the speed of increasing the material is adjusted based on the difference between the liquid level separation height and the lower limit, the speed may be gradually decreased as the difference decreases, for example, the difference and the speed may have a linear relationship; the speed is a first speed when the difference is larger than the difference threshold, the speed is a second speed when the difference is smaller than or equal to the difference threshold, and the first speed is larger than the second speed; or adjusting the speed of increasing the materials according to the change rate of the difference in unit time to make the difference change at a constant speed. Alternatively, the controlling of the increase of the liquid producing material may be a signal to the conveying device conveying the material, such that the conveying device starts conveying the material, e.g. the conveying device may be a batch feeder. In addition, the speed of the material can be controlled and increased by a frequency converter. And/or controlling the release of liquid from the container to lower the liquid level when the liquid level separation height exceeds the upper limit of the preset liquid level range, e.g., controlling the opening of an overflow port of the container to release liquid. Optionally, in the embodiment of the present invention, an alarm module may be further provided, where the alarm module is configured to alarm when the liquid level separation height exceeds an upper limit of the preset liquid level height range. For example, the alarm module may be a sound and light alarm.
Optionally, in an embodiment of the present invention, the liquid level monitoring module generates an induced magnetic field due to contact with the liquid level and issues an activation command to the moving module based on the generated induced magnetic field. Specifically, the liquid level monitoring module may include an induced magnetic field generation module, an induced current generation module, and an activation instruction issuing module. The induction magnetic field generation module is used for generating an induction magnetic field under the condition that the liquid level is contacted. For example, the induction magnetic field generation module includes a coil, and when the coil contacts the liquid level, current flows in the coil, and the coil generates an induction magnetic field. The induction current generation module is used for generating induction current under the action of the generated induction magnetic field. For example, the induced current generation module may generate the induced current by cutting the magnetic induction wire through the conductor; or the induced current generating module may generate the induced current by a change of the induced magnetic field, for example, the induced current generating module may be a coil, and the induced magnetic field generated by the induced magnetic field generating module is a changed magnetic field, so that the coil generates the induced current. The activation instruction sending module is used for sending an activation instruction to the moving module under the action of the generated induced current. For example, the activation instruction issuing module may be a hall sensor.
Alternatively, in an embodiment of the present invention, the induction magnetic field generation module may include a liquid level contact module, a connection member, and a first coil. Wherein, the liquid surface contact module has conductivity, can conduct electric current when contacting with the liquid surface. For example, the liquid level contact module may be a probe. In addition, the liquid level contact module can be a component with relatively stable performance, and other components are not generated in the liquid when the liquid level contact module is in contact with the liquid level so as to influence the components of the liquid, so that the production quality is improved. For example, the liquid level contact module may be a platinum probe. The connecting component is used for connecting the liquid level contact module and the first coil, the connecting component comprises a first part and a second part, the first part is parallel to the liquid level, the first part is connected with the first coil, the second part is connected with the liquid level contact module, the liquid level height determining module determines the height of the liquid level based on the first part, and the moving module moves the liquid level monitoring module by moving the first part. Specifically, the liquid level height determination module determines the height of the liquid level by determining the height of the first portion. For example, a reference height of the first portion corresponding to the height of the liquid surface of 0 is set, and the height of the liquid surface is determined by determining a change in the height of the first portion from the reference height. The first coil is used for generating an induction magnetic field when the liquid surface contact module is contacted with the liquid surface and receives the current transmitted from the liquid surface contact module through the connecting component.
Optionally, in the embodiment of the present invention, the liquid level determining module may include a height detecting module and a height processing module. The height detection module is used for detecting the height of the first part. For example, the height detection module may be a height measuring instrument, and may be other devices that can detect height. The height processing module is used for determining the height of the liquid level based on the height of the first part. Specifically, a reference height of the first portion corresponding to the height of the liquid surface being 0 is set, and the height of the liquid surface is determined by determining a change in the height of the first portion from the reference height. For example, the altitude processing module may be a data processor.
Optionally, in an embodiment of the present invention, the height processing module is further configured to: when the liquid level separation height does not reach the lower limit of the preset liquid level height range and the materials for generating liquid need to be added, determining the speed for adding the materials based on the difference between the liquid level separation height and the lower limit. Specifically, a rule of correspondence between the gap and the speed may be set, and the speed may be determined based on the rule of correspondence. For example, the corresponding rule may be that the speed is gradually reduced along with the reduction of the gap, the gap and the speed are in a linear relation, and the speed of the material is determined to be increased based on the linear relation; the speed is a first speed when the difference is larger than the difference threshold, the speed is a second speed when the difference is smaller than or equal to the difference threshold, the first speed is larger than the second speed, and the speed for increasing the materials is determined based on the relation between the difference and the difference threshold; the speed of increasing the materials can be adjusted according to the change rate of the difference in unit time, so that the difference changes at a constant speed, and when the change rate of the difference fluctuates in unit time, the speed of increasing the materials is reduced until the difference changes at the constant speed. Wherein, the difference is changed at a constant speed, namely the height of the liquid level is changed at a constant speed.
Optionally, in the embodiment of the present invention, the moving module may include a control module and a driving module. Wherein the control module is used for: receiving an activation instruction; and sending a driving instruction to the driving module under the condition of receiving the activating instruction. For example, the control module may be a controller. The driving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition of receiving the driving instruction. The control module is further configured to: obtaining a liquid level separation height from a liquid level height determination module, wherein the liquid level separation height is the height of the liquid level when the liquid level monitoring module is just separated from the liquid level; comparing the liquid level separation height with a preset liquid level height range; and controlling the moving liquid level so that the liquid level separation height is within the preset liquid level height range in the case that the liquid level separation height is not within the preset liquid level height range.
Optionally, in an embodiment of the present invention, the driving module may include a motor and a liquid level separation module. The motor is used for receiving a driving command. When the liquid is generated under the action of high temperature, the motor may be a high temperature motor. In addition, the liquid level separation module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the driving of the motor. For example, the level separation module may be a hydraulic movement level monitoring module.
Alternatively, in an embodiment of the present invention, the level separation module may include a hydraulic rod, hydraulic oil, a lift rod, a hydraulic cylinder, a first gasket, and a second gasket. The hydraulic rod is driven by the motor to move; the lifting rod is used for moving the liquid level monitoring module under the action of the hydraulic rod extruding the hydraulic oil; the hydraulic rod and the lifting rod are positioned in the hydraulic cylinder, and the hydraulic oil is positioned between the hydraulic rod and the lifting rod; the first sealing gasket is positioned between the hydraulic rod and the hydraulic oil; the second gasket is located between the lift rod and the hydraulic oil. Alternatively, the hydraulic cylinder may be a U-shaped hydraulic cylinder.
Optionally, in the embodiment of the present invention, an indication module may be further included. The indicating module is used for indicating when the liquid level monitoring module contacts the liquid level so as to prompt the liquid level monitoring module to contact the liquid level. The fault can be timely discovered by using the indicating module. For example, if the indicating module indicates that the liquid level monitoring module contacts the liquid level for a long time, it indicates that the moving module has not operated for a long time, and the moving module has a fault. For example, the indication module may be a light emitting diode.
Fig. 2 is a block diagram of an apparatus for controlling a level of a liquid in a container according to another embodiment of the present invention. Wherein, in this embodiment, the liquid is a molten glass liquid; the vessel is a glass melting furnace. In the embodiment, the automatic liquid level monitoring device aims at automatically monitoring the liquid level in the electric heating glass melting furnace, and the height of a probe for detecting the liquid level change, a batch feeder and an overflow port are directly subjected to real-time closed-loop control through a specially designed controller, so that the aim of accurately and automatically controlling the liquid level is fulfilled.
As shown in fig. 2, the apparatus includes a first coil 1, a lifting rod 2, a platinum probe 3, molten glass 4, a glass melting furnace 5, a height measuring instrument 6, a high temperature motor 7, a U-shaped hydraulic cylinder 8, a hydraulic rod 9, a first seal gasket 10, hydraulic oil 11, a second seal gasket 15, a first portion 16 and a second portion 17. The platinum has high melting point, the platinum probe 3 has stable chemical property and good oxidation resistance, and has longer service life in a high-temperature kiln. The first coil 1 is connected to the platinum probe 3 through the structure of the platinum probe 3, wherein the structure of the platinum probe 3 is the connecting part in the embodiment of the invention, the first part 16 and the second part 17 of the connecting part are provided, the first part 16 is connected with the first coil 1 and is parallel to the liquid level of the molten glass liquid 4, and the second part 17 is connected with the platinum probe 3. The first coil 1 and the platinum probe 3 are connected together to the lifting bar 2, in particular by means of a first section 16. Lift bar 2 is located 8 left sides of U type pneumatic cylinder, and hydraulic stem 9 is located 8 right sides of U type pneumatic cylinder, and hydraulic oil 11 is filled to 8 middle of U type pneumatic cylinder, and hydraulic oil 11 is bad conductor. Sealing gaskets, namely a second sealing gasket 15 and a first sealing gasket 10, are arranged below the lifting rod 2 and the hydraulic rod 9. The high-temperature motor 7 is used for driving the hydraulic rod 9 to reciprocate up and down to realize hydraulic operation; when the hydraulic rod 9 moves downward, the hydraulic oil 11 is pressed so that the lift lever 2 is lifted upward, so that the first portion 16 is lifted upward, and the platinum probe 3 is lifted upward. The height determinator 6 measures the height of the first part 16 in real time, i.e. the height of the uppermost end of the lifting rod 2 in real time, and feeds back the data to the data processor. The data processor determines the height of the liquid level based on the data fed back from the height measuring instrument 6. Specifically, the liquid level was set to "0" when the platinum probe 3 touched the bottom of the glass melting furnace 5, the position of the U-shaped hydraulic cylinder 8 was fixed, and the height of the first portion 16 at this time was set to a reference height corresponding to the liquid level of "0". The data processor calculates the height difference of the data fed back by the height measuring instrument 6 relative to the reference height, and the height difference is the height of the liquid level in the glass melting furnace 5. In addition, the position of the U-shaped hydraulic cylinder 8 is fixed, and then if the platinum probe 3 needs to be replaced, the measurement accuracy can be kept unchanged without stopping production. Further, in the embodiment of the present invention, the hydraulic oil 11 may be a hydraulic oil having a purity high enough to ensure insulation itself.
An exemplary description of how the level of the liquid is controlled is provided in connection with fig. 2-4. As shown in fig. 2, when the platinum probe 3 is in contact with the glass liquid surface, the glass is electrically conductive when melted by using electric heating of 400V and 50HZ in the electrically heated glass melting furnace 5, and an electric current is transmitted to the first coil 1 through the platinum probe 3, the second portion 17, and the first portion 16, and the first coil 1 generates an induction magnetic field. As shown in fig. 3, the second coil 18 receives the induced magnetic field of the first coil 1 to generate an induced current. The light emitting diode 20 lights up after the second coil 18 generates the induction current, indicating that the platinum tip 3 has come into contact with the surface of the molten glass 4 at this time. As shown in fig. 3, after the second coil 18 generates the induced current, the hall sensor 19 senses the induced current generated in the second coil 18, and transmits a signal to the controller 21, which is an activation command to cause the controller 21 to be activated, and set to "1". After activating the controller 21, the controller 21 acquires the liquid level data at that time and immediately sends a drive command to the high temperature motor 7. After receiving the driving instruction, the high-temperature motor 7 pushes the hydraulic rod 9 downwards so as to raise the height of the platinum probe 3 until the platinum probe 3 is separated from the liquid level. When the platinum probe 3 is separated from the liquid level, the induced current disappears or is obviously weakened, and the controller 21 does not receive an activation instruction. When the controller 21 does not receive the activation instruction, the high temperature motor 7 is controlled to stop the driving action. Comparing the liquid level at rest (i.e., the level separation height in the present example) with a set "feed liquid level" (i.e., the lower limit of the preset liquid level range in the present example); when the liquid level in the resting state does not reach the feeding liquid level, the controller sends a feeding instruction to the feeding machine to raise the liquid level. Wherein, the controller controls the feeding speed of the batch feeder through the frequency converter. Specifically, the data processor determines the feeding speed of the feeding machine according to the difference between the liquid level height in the resting state and the feeding liquid level height, and transmits the determined feeding speed to the controller, and the controller controls the feeding speed of the feeding machine through the frequency converter, as shown in fig. 4. For example, when the difference is greater than the difference threshold, the feeding speed is higher and is the first speed; when the difference is smaller than or equal to the difference threshold value, the liquid level height in the resting state is close to the liquid level height of the feeding, the feeding speed is slow, the feeding speed is the second speed, and the first speed is larger than the second speed. When the liquid level in the resting state exceeds a safety value (namely the upper limit of the preset liquid level range in the embodiment of the invention), the controller controls to open the overflow port and discharge the molten glass, as shown in figure 4. In addition, in the embodiment of the present invention, the second coil 18 should be spaced apart from the first coil 1, and the first coil 1 and the second coil 18 are separated by an insulating material, so that a detection portion (a portion formed by the platinum probe 3, the connecting member and the first coil 1) for detecting the liquid level and a control portion (a portion formed by the second coil 18, the hall sensor 10 and the controller 21) for controlling the lifting rod 2 to lift are separated to a certain extent, and the housings of the first coil 1 and the second coil 18 should be well grounded to avoid the occurrence of electric leakage. In addition, the controller 21 can also be connected with an audible and visual alarm; when the glass liquid level exceeds the set safety value range, the controller 21 sends an alarm instruction to the audible and visual alarm, so that the audible and visual alarm gives an alarm to realize alarm prompt.
The technical scheme provided by the embodiment of the invention automatically controls the liquid level in the electric heating glass melting furnace, processes the height data fed back by the data processor, controls the movement of the high-temperature motor and the opening and closing of the overflow port by the controller, and adjusts the conveying speed of the batch feeder by the frequency converter, thereby realizing automatic control.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: 1) The liquid level height can be monitored in real time, the liquid level height can be automatically controlled, and manual operation is not needed; 2) The method for automatically controlling the liquid level provided by the embodiment of the invention can be realized by an automatic control process, effectively realizes the automatic control of the liquid level of the glass in the glass melting furnace, and reduces the labor cost; 3) The feeding speed of the feeding machine is adjusted, the liquid level is kept stable in a certain range, the fluctuation of the liquid level is ensured to be stable, and the quality problems of glass products, such as stone heads, bubble lines and the like, caused by large fluctuation of the height of the glass liquid level can be effectively avoided.
Further, another aspect of an embodiment of the present invention provides an object production system including: the apparatus described in the above embodiments. Wherein the object has appeared in a liquid state during the production of the object. For example, the object is glass, which has been present in a liquid state during the production of the glass.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (12)
1. An apparatus for controlling the level of a liquid in a container, the apparatus comprising:
the liquid level monitoring module is used for sending an activation instruction to the moving module under the condition of contacting the liquid level;
the moving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition that the activating instruction is received; and
the liquid level height determining module is used for determining the height of the liquid level;
the mobile module is further configured to:
obtaining a liquid level separation height from the liquid level height determination module, wherein the liquid level separation height is the height of the liquid level just when the liquid level monitoring module is separated from the liquid level;
comparing the liquid level separation height with a preset liquid level height range; and
controlling to move the liquid level such that the liquid level separation height is within the preset liquid level height range, if the liquid level separation height is not within the preset liquid level height range.
2. The apparatus of claim 1, wherein the moving module to control moving the liquid level such that the liquid level separation height is within the preset liquid level height range if the liquid level separation height is not within the preset liquid level height range comprises:
controlling to increase the material generating the liquid to lift the liquid level when the liquid level separation height does not reach a lower limit of the preset liquid level height range, wherein a speed of increasing the material is adjusted based on a difference between the liquid level separation height and the lower limit; and/or
Controlling the release of the liquid from the container to lower the liquid level when the liquid level separation height exceeds the upper limit of the preset liquid level range.
3. The device of claim 1 or 2, wherein the liquid level monitoring module generates an induction magnetic field due to contact with the liquid level and issues an activation command to the movement module based on the generated induction magnetic field.
4. The apparatus of claim 3, wherein the fluid level monitoring module comprises:
the induction magnetic field generating module is used for generating an induction magnetic field under the condition of contacting the liquid level;
the induction current generation module is used for generating induction current under the action of the generated induction magnetic field; and
and the activation instruction sending module is used for sending the activation instruction to the moving module under the action of the generated induced current.
5. The apparatus of claim 4, wherein the induced magnetic field generation module comprises:
a liquid surface contact module;
a connection member for connecting the liquid level contact module and the first coil, the connection member including a first portion and a second portion, the first portion being parallel to the liquid level, the first portion being connected to the first coil, the second portion being connected to the liquid level contact module, the liquid level height determination module determining the height of the liquid level based on the first portion, the movement module moving the liquid level monitoring module by moving the first portion; and
the first coil is used for generating an induction magnetic field by receiving current transmitted from the liquid surface contact module through the connecting component under the condition that the liquid surface contact module is contacted with the liquid surface.
6. The apparatus of claim 5, wherein the liquid level determination module comprises:
a height detection module for detecting a height of the first portion; and
a height processing module to determine a height of the liquid level based on the height of the first portion.
7. The apparatus of claim 5, wherein the altitude processing module is further configured to:
when the liquid level separation height does not reach the lower limit of the preset liquid level height range and the material for generating the liquid needs to be increased, the speed for increasing the material is determined based on the difference between the liquid level separation height and the lower limit.
8. The apparatus of claim 5,
the induction current generating module is a second coil; and/or
The activation instruction sending module is a Hall sensor.
9. The apparatus of claim 1, wherein the moving module comprises:
a control module to:
receiving the activation instruction; and
under the condition of receiving the activating instruction, sending a driving instruction to a driving module; the driving module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the condition of receiving the driving instruction;
the control module is further configured to:
acquiring the liquid level separation height;
comparing the liquid level separation height with a preset liquid level height range; and
controlling to move the liquid level such that the liquid level separation height is within the preset liquid level height range, if the liquid level separation height is not within the preset liquid level height range.
10. The apparatus of claim 9, wherein the drive module comprises:
the motor is used for receiving the driving instruction;
and the liquid level separation module is used for moving the liquid level monitoring module until the liquid level monitoring module is separated from the liquid level under the driving of the motor.
11. The apparatus of claim 10, wherein the liquid level separation module comprises:
the hydraulic rod is driven by the motor to move;
hydraulic oil;
the lifting rod is used for moving the liquid level monitoring module under the action that the hydraulic rod extrudes the hydraulic oil;
a hydraulic cylinder, the hydraulic rod and the lifting rod being located in the hydraulic cylinder, the hydraulic oil being located between the hydraulic rod and the lifting rod;
the first sealing gasket is positioned between the hydraulic rod and the hydraulic oil; and
and the second sealing gasket is positioned between the lifting rod and the hydraulic oil.
12. An object production system, comprising:
the apparatus of any one of claims 1-11, wherein the object has appeared in a liquid state during production of the object.
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| CN202210568726.XA CN115167539B (en) | 2022-05-24 | Device for controlling the level of a liquid in a container and object production system |
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| CN202210568726.XA CN115167539B (en) | 2022-05-24 | Device for controlling the level of a liquid in a container and object production system |
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